Influential coalitions for boolean functions I: Constructions

Jean Bourgain*, Jeff Kahn, Gil Kalai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

For f : {0, 1}n → {0, 1} and S ⊂ {1, 2, . . .,,n}, let J+ S(f) be the probability that, for x uniform from {0. 1}n, there is some y ϵ {0, 1}n with f(y) = 1 and x = y outside S. We are interested in estimating, for given μ(f) (:= E(f)) and m, the least possible value of max {J+ s(f): |S| = m}. A theorem of Kahn, Kalai, and Linial (KKL) gave some understanding of this issue and led to several stronger conjectures. Here we disprove a pair of conjectures from the late 80s, as follows.

Original languageEnglish
JournalTheory of Computing
Volume20
DOIs
StatePublished - 2024

Bibliographical note

Publisher Copyright:
© 2024 Jean Bourgain, Jeff Kahn, and Gil Kalai.

Keywords

  • Boolean functions
  • Discrete isoperimetric inequalities
  • Influence
  • Trace of set-systems
  • Tribes

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